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Journal articles on the topic 'Annelids'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 June 2025

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1

McHugh, Damhnait. "Molecular phylogeny of the Annelida." Canadian Journal of Zoology 78, no. 11 (2000): 1873–84. http://dx.doi.org/10.1139/z00-141.

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Traditionally, the Annelida has been classified as a group comprising the Polychaeta and the Clitellata. Recent phylogenetic analyses have led to profound changes in the view that the Annelida, as traditionally formulated, is a natural, monophyletic group. Both molecular and morphological analyses support placement of the Siboglinidae (formerly the Pogonophora) as a derived group within the Annelida; there is also evidence, based on molecular analysis of the nuclear gene elongation factor-1α, that the unsegmented echiurids are derived annelids. While monophyly of the Clitellata is well-support

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2

ROUSE, GREG W., and FREDRIK PLEIJEL. "Annelida*." Zootaxa 1668, no. 1 (2007): 245–64. http://dx.doi.org/10.11646/zootaxa.1668.1.13.

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The first annelids were formally described by Linnaeus (1758) and we here briefly review the history and composition of the group. The traditionally recognized classes were Polychaeta, Oligochaeta and Hirudinea. The latter two are now viewed as the taxon Clitellata, since recognizing Hirudinea with class rank renders Oligochaeta paraphyletic. Polychaeta appears to contain Clitellata, and so may be synonymous with Annelida. Current consensus would place previously recognized phyla such as Echiura, Pogonophora, Sipuncula and Vestimentifera as annelids, though relationships among these and the va

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Mucciolo, Serena, Andrea Desiderato, Marika Salonna, et al. "Finding Aquaporins in Annelids: An Evolutionary Analysis and a Case Study." Cells 10, no. 12 (2021): 3562. http://dx.doi.org/10.3390/cells10123562.

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Aquaporins (AQPs) are a family of membrane channels facilitating diffusion of water and small solutes into and out of cells. Despite their biological relevance in osmoregulation and ubiquitous distribution throughout metazoans, the presence of AQPs in annelids has been poorly investigated. Here, we searched and annotated Aqp sequences in public genomes and transcriptomes of annelids, inferred their evolutionary relationships through phylogenetic analyses and discussed their putative physiological relevance. We identified a total of 401 Aqp sequences in 27 annelid species, including 367 sequenc

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Parry, Luke A., Gregory D. Edgecombe, Danny Eibye-Jacobsen, and Jakob Vinther. "The impact of fossil data on annelid phylogeny inferred from discrete morphological characters." Proceedings of the Royal Society B: Biological Sciences 283, no. 1837 (2016): 20161378. http://dx.doi.org/10.1098/rspb.2016.1378.

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As a result of their plastic body plan, the relationships of the annelid worms and even the taxonomic makeup of the phylum have long been contentious. Morphological cladistic analyses have typically recovered a monophyletic Polychaeta, with the simple-bodied forms assigned to an early-diverging clade or grade. This is in stark contrast to molecular trees, in which polychaetes are paraphyletic and include clitellates, echiurans and sipunculans. Cambrian stem group annelid body fossils are complex-bodied polychaetes that possess well-developed parapodia and paired head appendages (palps), sugges

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Bartolomaeus, Thomas. "Head Kidneys in Hatchlings of Scoloplos Armiger (Annelida: Orbiniida): Implications for the Occurrence of Protonephridia in Lecithotrophic Larvae." Journal of the Marine Biological Association of the United Kingdom 78, no. 1 (1998): 183–92. http://dx.doi.org/10.1017/s0025315400040017.

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It is generally believed that lecithotrophic larvae of annelids do not possess functional excretory organs. However, as in certain annelids the planktotrophic trochophora larva has been secondarily modified into a lecithotrophic developmental stage and because protonephridia are characteristic for the trochophora, lecithotrophic developmental stages should also possess such organs. To test this assumption hatchlings of the orbiniidan Scoloplos armiger, which develops directly without a free-living larval stage, were investigated ultrastrucrurally. Each hatchling possesses a pair of protonephri

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Capa, María, and Pat Hutchings. "Annelid Diversity: Historical Overview and Future Perspectives." Diversity 13, no. 3 (2021): 129. http://dx.doi.org/10.3390/d13030129.

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Annelida is a ubiquitous, common and diverse group of organisms, found in terrestrial, fresh waters and marine environments. Despite the large efforts put into resolving the evolutionary relationships of these and other Lophotrochozoa, and the delineation of the basal nodes within the group, these are still unanswered. Annelida holds an enormous diversity of forms and biological strategies alongside a large number of species, following Arthropoda, Mollusca, Vertebrata and perhaps Platyhelminthes, among the species most rich in phyla within Metazoa. The number of currently accepted annelid spec

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MAGALHÃES, WAGNER F., PAT HUTCHINGS, ALEJANDRO OCEGUERA-FIGUEROA, et al. "Segmented worms (Phylum Annelida): a celebration of twenty years of progress through Zootaxa and call for action on the taxonomic work that remains." Zootaxa 4979, no. 1 (2021): 190–211. http://dx.doi.org/10.11646/zootaxa.4979.1.18.

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Zootaxa has been the leading journal on invertebrate systematics especially within Annelida. Our current estimates indicate annelids include approximately 20,200 valid species of polychaetes, oligochaetes, leeches, sipunculans and echiurans. We include herein the impact of Zootaxa on the description of new annelid species in the last two decades. Since 2001, there have been over 1,300 new annelid taxa published in about 630 papers. The majority of these are polychaetes (921 new species and 40 new genera) followed by oligochaetes (308 new species and 10 new genera) and leeches (21 new species).

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8

Kennedy, Victor S. "A summer benthic survey in Conception Bay, Newfoundland, emphasizing zoogeography of annelids and amphipods." Canadian Journal of Zoology 63, no. 8 (1985): 1863–69. http://dx.doi.org/10.1139/z85-277.

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A limited benthic survey was made in August in Conception Bay, Newfoundland, using a 0.2-m2 van Veen grab sampler. Nine stations were sampled in a relatively shallow (62–79 m), soft-bottom (predominantly silt) region with low bottom water (0.2–1.4 °C) and sediment (0.5–2.0 °C) temperatures. Annelids (32 species) and amphipods (18 species) were the common invertebrates collected, with annelids being more numerous, both in numbers of individuals and of species. Deposit-feeding annelids outnumbered carnivores, with subsurface deposit feeders more abundant than surface feeders. Sedentary individua

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9

Kostyuchenko, Roman P., and Vitaly V. Kozin. "Comparative Aspects of Annelid Regeneration: Towards Understanding the Mechanisms of Regeneration." Genes 12, no. 8 (2021): 1148. http://dx.doi.org/10.3390/genes12081148.

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The question of why animals vary in their ability to regenerate remains one of the most intriguing questions in biology. Annelids are a large and diverse phylum, many members of which are capable of extensive regeneration such as regrowth of a complete head or tail and whole-body regeneration, even from few segments. On the other hand, some representatives of both of the two major annelid clades show very limited tissue regeneration and are completely incapable of segmental regeneration. Here we review experimental and descriptive data on annelid regeneration, obtained at different levels of o

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Clauss, Wolfgang G. "Epithelial transport and osmoregulation in annelids." Canadian Journal of Zoology 79, no. 2 (2001): 192–203. http://dx.doi.org/10.1139/z00-200.

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Epithelial transport related to osmoregulation has so far not been extensively investigated in annelids. Compared with the large body of information about ion transport across crustacean or insect epithelia, only a few studies have been done with isolated preparations of annelids, using the body wall of marine polychaetes or Hirudinea. Nephridial function and general body homeostasis have received more attention, and have probably been best investigated in Hirudinea. With recent advances in the molecular physiology of epithelial transport systems in vertebrates, the cloning of various transpor

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Belato, Flávia A., Christopher J. Coates, Kenneth M. Halanych, Roy E. Weber, and Elisa M. Costa-Paiva. "Evolutionary History of the Globin Gene Family in Annelids." Genome Biology and Evolution 12, no. 10 (2020): 1719–33. http://dx.doi.org/10.1093/gbe/evaa134.

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Abstract Animals depend on the sequential oxidation of organic molecules to survive; thus, oxygen-carrying/transporting proteins play a fundamental role in aerobic metabolism. Globins are the most common and widespread group of respiratory proteins. They can be divided into three types: circulating intracellular, noncirculating intracellular, and extracellular, all of which have been reported in annelids. The diversity of oxygen transport proteins has been underestimated across metazoans. We probed 250 annelid transcriptomes in search of globin diversity in order to elucidate the evolutionary

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Parry, Luke A., Gregory D. Edgecombe, Dan Sykes, and Jakob Vinther. "Jaw elements in Plumulites bengtsoni confirm that machaeridians are extinct armoured scaleworms." Proceedings of the Royal Society B: Biological Sciences 286, no. 1907 (2019): 20191247. http://dx.doi.org/10.1098/rspb.2019.1247.

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Machaeridians are Palaeozoic animals that are dorsally armoured with serialized, imbricating shell plates that cover or enclose the body. Prior to the discovery of an articulated plumulitid machaeridian from the Early Ordovician of Morocco that preserved unambiguous annelid characters (segmental parapodia with chaetae), machaeridians were a palaeontological mystery, having been previously linked to echinoderms, barnacles, tommotiids (putative stem-group brachiopods) or molluscs. Although the annelid affinities of machaeridians are now firmly established, their position within the phylum and re

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Roots, Betty I. "The phylogeny of invertebrates and the evolution of myelin." Neuron Glia Biology 4, no. 2 (2008): 101–9. http://dx.doi.org/10.1017/s1740925x0900012x.

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Current concepts of invertebrate phylogeny are reviewed. Annelida and Arthropoda, previously regarded as closely related, are now placed in separate clades. Myelin, a sheath of multiple layers of membranes around nerve axons, is found in members of the Annelida, Arthropoda and Chordata. The structure, composition and function of the sheaths in Annelida and Arthropoda are examined and evidence for the separate evolutionary origins of myelin in the three clades is presented. That myelin has arisen independently at least three times, namely in Annelids, Arthropodas and Chordates, provides a remar

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Li, Yan, Viktar Lemiasheuski, and Svetlana Maksimova. "The Simulated Experimental Design and Study of the Synergistic Treatment of Chicken Manure and Traditional Chinese Medicine Residues on Earthworm Growth and Soil Quality." E3S Web of Conferences 497 (2024): 03012. http://dx.doi.org/10.1051/e3sconf/202449703012.

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Annelids conspicuously exert influence upon soil physicochemical attributes through their alimen-tary, burrowing, and excretion endeavors, thereby imparting ramifications upon soil erosion phenomena. Nev-ertheless, comprehension of the particular repercussions stemming from annelid activities vis-à-is soil erosion remains circumscribed. The primary objective of this investigation was to scrutinize the synergistic ramifica-tions of gallinaceous fecal matter and remnants of traditional Chinese medicinal substances on annelid prolif-eration and soil characteristics within a simulated experiment.

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Muir, Lucy A., and Joseph P. Botting. "The putative Ordovician annelid worm Haileyia adhaerens Ruedemann, 1934 is not a recognizable fossil." Journal of Paleontology 94, no. 3 (2019): 589–91. http://dx.doi.org/10.1017/jpa.2019.76.

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AbstractA number of putative annelid worms have been described from Ordovician strata, and these records are included in large-scale compilations of paleontological data. If these fossils are worms, they may yield important phylogenetic information; conversely, if they are not worms, they should not be included in large-scale databases. In either case, restudy of the type material of these supposed annelids is useful. The type material (holotype and one paratype) of one of these putative annelids, Haileyia adhaerens Ruedemann, 1934, from the Middle Ordovician Normanskill Shale of Idaho, USA, i

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Seaver, Elaine C., and Danielle M. de Jong. "Regeneration in the Segmented Annelid Capitella teleta." Genes 12, no. 11 (2021): 1769. http://dx.doi.org/10.3390/genes12111769.

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The segmented worms, or annelids, are a clade within the Lophotrochozoa, one of the three bilaterian superclades. Annelids have long been models for regeneration studies due to their impressive regenerative abilities. Furthermore, the group exhibits variation in adult regeneration abilities with some species able to replace anterior segments, posterior segments, both or neither. Successful regeneration includes regrowth of complex organ systems, including the centralized nervous system, gut, musculature, nephridia and gonads. Here, regenerative capabilities of the annelid Capitella teleta are

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Freitas, RF, and PR Pagliosa. "Mangrove benthic macrofauna: drivers of community structure and functional traits at multiple spatial scales." Marine Ecology Progress Series 638 (March 19, 2020): 25–38. http://dx.doi.org/10.3354/meps13260.

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Environmental processes acting at multiple spatial scales influence the structure and function of macrofaunal communities in marine habitats. However, the relative contributions of small- and large-scale factors in shaping faunal communities are still poorly understood. We investigated the relative contributions of climate, geophysical and soil properties, and forest structure on structural and functional characteristics of Brazilian coastal mangrove macrofauna. We found that macrofaunal community structure is mainly driven by large-scale factors, such as minimum air temperature and runoff, wh

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TOSO, ANDREA, MATTEO PUTIGNANO, LARA M. FUMAROLA, et al. "A revised inventory of Annelida in the Lebanese coastal waters with ten new aliens for the Mediterranean Sea." Mediterranean Marine Science 25, no. 3 (2024): 715–31. https://doi.org/10.12681/mms.37998.

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Sampling activities conducted in the Tyre Coast Nature Reserve, southern Lebanon, to study the marine annelid fauna of the area, allowed for the revision of the diversity of this group in Lebanon. We particularly focused on non-indigenous species (NIS), which were characterised from morphological and molecular points of view. A total of 116 taxa were collected; 10 species are reported here for the first time in the Mediterranean Sea, while 6 species with presumable Indo-Pacific affinity are likely new to science. Seventy-three taxa were native, while 43 taxa were NIS; among the latter, 24 spec

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Platova, Sofia, Liudmila Poliushkevich, Milana Kulakova, Maksim Nesterenko, Viktor Starunov, and Elena Novikova. "Gotta Go Slow: Two Evolutionarily Distinct Annelids Retain a Common Hedgehog Pathway Composition, Outlining Its Pan-Bilaterian Core." International Journal of Molecular Sciences 23, no. 22 (2022): 14312. http://dx.doi.org/10.3390/ijms232214312.

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Hedgehog signaling is one of the key regulators of morphogenesis, cell differentiation, and regeneration. While the Hh pathway is present in all bilaterians, it has mainly been studied in model animals such as Drosophila and vertebrates. Despite the conservatism of its core components, mechanisms of signal transduction and additional components vary in Ecdysozoa and Deuterostomia. Vertebrates have multiple copies of the pathway members, which complicates signaling implementation, whereas model ecdysozoans appear to have lost some components due to fast evolution rates. To shed light on the anc

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Schröder, Heinz C., Hans J. Breter, Ernesto Fattorusso, et al. "Okadaic Acid, an Apoptogenic Toxin for Symbiotic/Parasitic Annelids in the Demosponge Suberites domuncula." Applied and Environmental Microbiology 72, no. 7 (2006): 4907–16. http://dx.doi.org/10.1128/aem.00228-06.

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ABSTRACT The role of okadaic acid (OA) in the defense system of the marine demosponge Suberites domuncula against symbiotic/parasitic annelids was examined. Bacteria within the mesohyl produced okadaic acid at concentrations between 32 ng/g and 58 ng/g of tissue (wet weight). By immunocytochemical methods and by use of antibodies against OA, we showed that the toxin was intracellularly stored in vesicles. Western blotting experiments demonstrated that OA also existed bound to a protein with a molecular weight of 35,000 which was tentatively identified as a galectin (by application of antigalec

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Meca, Miguel A., Anna Zhadan, and Torsten H. Struck. "The Early Branching Group of Orbiniida Sensu Struck et al., 2015: Parergodrilidae and Orbiniidae." Diversity 13, no. 1 (2021): 29. http://dx.doi.org/10.3390/d13010029.

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This review addresses the state of the art of the systematics and the improvements in the biology, ecology and species diversity of the two annelid taxa Parergodrilidae and Orbiniidae, the early branching group of Orbiniida sensu Struck et al., 2015 according to molecular studies. An effort to identify gaps of knowledge is given to understand the distribution, dispersal and the diversity Parergodrilidae and Orbiniidae hold, as well as to give several directions for future research. Parergodrilidae is a taxon of interstitial annelids constituted by the terrestrial Parergodrilus heideri (monotyp

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Wedeen, C. J., and D. A. Weisblat. "Segmental expression of an engrailed-class gene during early development and neurogenesis in an annelid." Development 113, no. 3 (1991): 805–14. http://dx.doi.org/10.1242/dev.113.3.805.

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ht-en protein, an annelid homolog of the Drosophila engrailed protein, is expressed during both early development and neurogenesis in embryos of the leech, Helobdella triserialis. In Helobdella as in Drosophila, early expression is in segmentally iterated stripes of cells within the posterior portion of the segment and later expression is in cells of the segmental ganglia. These findings suggest that dual expression of an en-class gene was present in a common ancestor of annelids and arthropods.

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Kerfouf, A., A. Baaloudj, F. Kies, K. Belhadj Tahar, and F. Denis. "Inventory of Annelida Polychaeta in Gulf of Oran (Western Algerian Coastline)." Zoodiversity 55, no. 4 (2021): 307–16. http://dx.doi.org/10.15407/zoo2021.04.307.

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Bionomical research on the continental shelf of the Oran‘s Gulf enabled us to study the Annelida macrofauna. Sampling sites were selected according to the bathymetry, which was divided into eight transects. Collected samples with the Aberdeen grab separated the Polychaeta Annelids from other zoological groups. 1571 Annelida Polychaeta were inventoried and determined by the species, including ten orders (Amphinomida, Capitellida, Eunicida, Flabelligerida, Ophelida, Oweniida, Phyllodocidae, Sabellida, Spionida, Terebellidae), 24 families, 84 genus and 74 species. The analyzed taxa highlighted th

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Vinther, Jakob, Danny Eibye-Jacobsen, and David A. T. Harper. "An Early Cambrian stem polychaete with pygidial cirri." Biology Letters 7, no. 6 (2011): 929–32. http://dx.doi.org/10.1098/rsbl.2011.0592.

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The oldest annelid fossils are polychaetes from the Cambrian Period. They are representatives of the annelid stem group and thus vital in any discussion of how we polarize the evolution of the crown group. Here, we describe a fossil polychaete from the Early Cambrian Sirius Passet fauna, Pygocirrus butyricampum gen. et sp. nov., with structures identified as pygidial cirri, which are recorded for the first time from Cambrian annelids. The body is slender and has biramous parapodia with chaetae organized in laterally oriented bundles. The presence of pygidial cirri is one of the characters that

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Keay, June, and Joseph W. Thornton. "Hormone-Activated Estrogen Receptors in Annelid Invertebrates: Implications for Evolution and Endocrine Disruption." Endocrinology 150, no. 4 (2008): 1731–38. http://dx.doi.org/10.1210/en.2008-1338.

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As the primary mediators of estrogen signaling in vertebrates, estrogen receptors (ERs) play crucial roles in reproduction, development, and behavior. They are also the major mediators of endocrine disruption by xenobiotic pollutants that mimic or block estrogen action. ERs that are sensitive to estrogen and endocrine disrupters have long been thought to be restricted to vertebrates: although there is evidence for estrogen signaling in invertebrates, the only ERs studied to date, from mollusks and cephalochordates, have been insensitive to estrogen and therefore incapable of mediating estrogen

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Parry, Luke, and Jean-Bernard Caron. "Canadia spinosa and the early evolution of the annelid nervous system." Science Advances 5, no. 9 (2019): eaax5858. http://dx.doi.org/10.1126/sciadv.aax5858.

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Annelid worms are a disparate, primitively segmented clade of bilaterians that first appear during the early Cambrian Period. Reconstructing their early evolution is complicated by the extreme morphological diversity in early diverging lineages, rapid diversification, and sparse fossil record. Canadia spinosa, a Burgess Shale fossil polychaete, is redescribed as having palps with feeding grooves, a dorsal median antenna and biramous parapodia associated with the head and flanking a ventral mouth. Carbonaceously preserved features are identified as a terminal brain, circumoral connectives, a mi

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Arai, A., A. Nakamoto, and T. Shimizu. "Specification of ectodermal teloblast lineages in embryos of the oligochaete annelid Tubifex: involvement of novel cell-cell interactions." Development 128, no. 7 (2001): 1211–19. http://dx.doi.org/10.1242/dev.128.7.1211.

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In embryos of clitellate annelids (i.e. oligochaetes and leeches), four ectodermal teloblasts (ectoteloblasts N, O, P and Q) are generated on either side through a stereotyped sequence of cell divisions of a proteloblast, NOPQ. The four ectoteloblasts assume distinct fates and produce bandlets of smaller progeny cells, which join together to form an ectodermal germ band. The pattern of the germ band, with respect to the ventrodorsal order of the bandlets, has been highly preserved in clitellate annelids. We show that specification of ectoteloblast lineages in the oligochaete annelid Tubifex in

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Müller, Julian, Thomas Bartolomaeus, and Ekin Tilic. "Formation and degeneration of scaled capillary notochaetae in Owenia fusiformis Delle Chiaje, 1844 (Oweniidae, Annelida)." Zoomorphology 141, no. 1 (2021): 43–56. http://dx.doi.org/10.1007/s00435-021-00547-z.

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AbstractPhylotranscriptomic studies of the past decade have repeatedly placed Oweniidae together with Magelonidae, as the sister group to remaining annelids. This newly established placement clearly makes them a key-lineage for understanding annelid evolution and morphology. One of the most prominent morphological features of all annelids are their chaetae. The arrangement and formation process (chaetogenesis) of these chitinous bristles have been studied extensively in hooked chaetae that are arranged in rows. However, the information on other types of chaetae is still scarce. In this study,

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Hou, Xitan, Maokai Wei, Qi Li, et al. "Transcriptome Analysis of Larval Segment Formation and Secondary Loss in the Echiuran Worm Urechis unicinctus." International Journal of Molecular Sciences 20, no. 8 (2019): 1806. http://dx.doi.org/10.3390/ijms20081806.

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The larval segment formation and secondary loss in echiurans is a special phenomenon, which is considered to be one of the important characteristics in the evolutionary relationship between the Echiura and Annelida. To better understand the molecular mechanism of this phenomenon, we revealed the larval transcriptome profile of the echiuran worm Urechis unicinctus using RNA-Seq technology. Twelve cDNA libraries of U. unicinctus larvae, late-trochophore (LT), early-segmentation larva (ES), segmentation larva (SL), and worm-shaped larva (WL) were constructed. Totally 243,381 unigenes were assembl

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Lee, Huan Chiao, Christopher J. Glasby, Anja Schulze та ін. "Dramatic Enhancement of Macrozoobenthic Species β-Diversity in Response to Artificial Breakwater Construction Along a Tropical Coastline". Diversity 16, № 12 (2024): 742. https://doi.org/10.3390/d16120742.

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The beneficial or detrimental effects of human-built marine structures (piers, breakwaters, and seawalls) on macrozoobenthic assemblages and diversities are currently underexplored. The present study investigated the enhancement of β-diversity of oysterbed-associated species on breakwaters constructed along sandy beaches. We compared habitat complexities and species assemblages among artificial breakwater shores (ABS), a natural rocky shore (NS), and an embayment shore (ES). Oysterbed habitat complexity was found to be greatest on the ABS due to the successional colonization of the reef-formin

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Worsaae, Katrine, Gonzalo Giribet, and Alejandro Martínez. "The role of progenesis in the diversification of the interstitial annelid lineage Psammodrilidae." Invertebrate Systematics 32, no. 4 (2018): 774. http://dx.doi.org/10.1071/is17063.

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Psammodrilidae constitutes a family of understudied, nearly completely ciliated, small-sized annelids, whose systematic position in Annelida remains unsettled and whose internal phylogeny is here investigated for the first time. Psammodrilids possess hooked chaetae typical of macroscopic tube-dwelling semi-sessile annelids, such as Arenicolidae. Yet, several minute members resemble, with their conspicuous gliding by ciliary motion and vagile lifestyle, interstitial fauna, adapted to move between sand grains. Moreover, psammodrilids exhibit a range of unique features, for example, bendable acic

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Václav, Pižl, Jiří Schlaghamerský, and Jan Tříska. "The effects of polycyclic aromatic hydrocarbons and heavy metals on terrestrial annelids in urban soils." Pesquisa Agropecuária Brasileira 44, no. 8 (2009): 1050–55. http://dx.doi.org/10.1590/s0100-204x2009000800038.

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The effect of soil contamination by polycyclic aromatic hydrocarbons (PAH) and heavy metals on earthworms and enchytraeids was studied in urban parks, in Brno, Czech Republic. In spring and autumn 2007, annelids were collected and soil samples taken in lawns along transects, at three different distances (1, 5 and 30 m) from streets with heavy traffic. In both seasons, two parks with two transects each were sampled. Earthworms were collected using the electrical octet method. Enchytraeids were extracted by the wet funnel method from soil cores. All collected annelids were counted and identified

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TILIC, EKIN, KATHRYN G. FEERST, and GREG W. ROUSE. "Two new species of Amphiglena (Sabellidae, Annelida), with an assessment of hidden diversity in the Mediterranean." Zootaxa 4648, no. 2 (2019): 337–53. http://dx.doi.org/10.11646/zootaxa.4648.2.8.

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Amphiglena is a clade of sabellid annelids that has 12 named species from around the world. New COI and 18S sequences were combined with some available data to generate a molecular phylogeny for Amphiglena. Two new species of Amphiglena are described as a result, using an integrative approach combining molecular evidence with morphological descriptions using histology, 3D reconstructions and electron microscopy. Amphiglena seaverae n. sp is described from Florida, USA and Amphiglena joyceae n. sp. from Edithburgh, South Australia. Our analyses also reveal a previously underemphasized species c

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Coneo-Gómez, Shanly, Silvia Sierra-Escrigas, Pedro R. Dueñas-Ramírez, and Rocío García-Urueña. "Nuevos registros de anélidos del banco de las Ánimas, Caribe colombiano." Boletín de Investigaciones Marinas y Costeras 51, no. 1 (2022): 9–36. http://dx.doi.org/10.25268/bimc.invemar.2022.51.1.1083.

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The banco de las Ánimas is a poor studied underwater environment with a characteristic reef fauna and an unknown large number of cryptic species. Annelids are one of the most common invertebrate groups in the coral formations of the Colombian Caribbean; these organisms are very abundant and variable in their body shapes (parapodia, setae, and gill structures), which imply a great evolutionary radiation. In order to know the diversity of annelids in the reef ecosystem in the Banco de las Ánimas, four artificial structures (known as autonomous reef monitoring structures) used as fauna collectors

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Parry, Luke, Jakob Vinther, and Gregory D. Edgecombe. "Cambrian stem-group annelids and a metameric origin of the annelid head." Biology Letters 11, no. 10 (2015): 20150763. http://dx.doi.org/10.1098/rsbl.2015.0763.

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The oldest fossil annelids come from the Early Cambrian Sirius Passet and Guanshan biotas and Middle Cambrian Burgess Shale. While these are among the best preserved polychaete fossils, their relationship to living taxa is contentious, having been interpreted either as members of extant clades or as a grade outside the crown group. New morphological observations from five Cambrian species include the oldest polychaete with head appendages, a new specimen of Pygocirrus from Sirius Passet, and an undescribed form from the Burgess Shale. We propose that the palps of Canadia are on an anterior seg

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Chipman, Ariel D. "Annelids step forward." Evolution & Development 10, no. 2 (2008): 141–42. http://dx.doi.org/10.1111/j.1525-142x.2008.00221.x.

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Dumnicka, Elzbieta, Joanna Galas, Mariola Krodkiewska, and Agnieszka Pociecha. "The diversity of annelids in subterranean waters: a case study from Poland." Knowledge & Management of Aquatic Ecosystems, no. 421 (2020): 16. http://dx.doi.org/10.1051/kmae/2020007.

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Not all invertebrate groups commonly occur in subterranean waters but annelids live in surface and underground habitats. The annelid species' richness in various underground waters (wells and interstitial and cave waters) and surface streams of Poland was compared, and the habitat preferences for the most frequent species were determined. Until now, 111 annelid taxa (mainly oligochaetes) had been identified in underground waters in Poland, with higher numbers (71) in the interstitial habitat than in stream bottoms (62). The number of species identified in the caves and wells was distinctly low

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Lauri, Antonella, Paola Bertucci, and Detlev Arendt. "Neurotrophin, p75, and Trk Signaling Module in the Developing Nervous System of the Marine AnnelidPlatynereis dumerilii." BioMed Research International 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/2456062.

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In vertebrates, neurotrophic signaling plays an important role in neuronal development, neural circuit formation, and neuronal plasticity, but its evolutionary origin remains obscure. We found and validated nucleotide sequences encoding putative neurotrophic ligands (neurotrophin, NT) and receptors (Trk and p75) in two annelids,Platynereis dumerilii(Errantia) andCapitella teleta(Sedentaria, for which some sequences were found recently by Wilson, 2009). Predicted protein sequences and structures ofPlatynereisneurotrophic molecules reveal a high degree of conservation with the vertebrate counter

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De Assis, José Eriberto, and Martin Lindsey Christoffersen. "Character investigation and homology, with a brief discussion on the phylogenetic relationships of Annelida and Polychaeta within Metazoa." Brazilian Journal of Biological Sciences 7, no. 16 (2020): 119–47. http://dx.doi.org/10.21472/bjbs(2020)071601.

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The intense production of information demands coherent treatment of available bodies of theoretical knowledge. A critical revision of methods in use within research programs is essential to maintain an adequate ontology and to guarantee the particular epistemological position required by each research area. The theory of Phylogenetic Systematics was developed in multiple forms, resulting in hypotheses that may be widely incongruent. This reflects the crisis of present paradigm, and illustrates failures in present phylogenetic thinking. The aim of the study is to discuss characters and homology

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Silva, Rafael Costa da, and Antonio Carlos Sequeira Fernandes. "Review of Oliveirania santa catharinae (sic) Maury 1927 and associated ichnofossils (Itararé Group, Late Carboniferous of Paraná Basin, Brazil)." Terr Plural 15 (2021): e2117741. http://dx.doi.org/10.5212/terraplural.v.15.2117741.029.

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The sedimentary layers of Anitápolis, Santa Catarina, were the subject of relevant discussions about age and paleoenvironment in the first half of the 20th century. Today they are correlated to the ritmites from Itararé Group, but some of the fossils that are part of these studies were not subsequently revised. This is the case of Oliveirania santa catharinae (sic) Maury 1927, a species originally attributed to annelids, and the ichnofossils attributed to it by association. The Annelida fossils were considered here as pseudofossils of inorganic origin. The ichnofossils attributed to Oliveirani

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Chartier, Thomas F., Joran Deschamps, Wiebke Dürichen, Gáspár Jékely, and Detlev Arendt. "Whole-head recording of chemosensory activity in the marine annelid Platynereis dumerilii." Open Biology 8, no. 10 (2018): 180139. http://dx.doi.org/10.1098/rsob.180139.

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Chemical detection is key to various behaviours in both marine and terrestrial animals. Marine species, though highly diverse, have been underrepresented so far in studies on chemosensory systems, and our knowledge mostly concerns the detection of airborne cues. A broader comparative approach is therefore desirable. Marine annelid worms with their rich behavioural repertoire represent attractive models for chemosensation. Here, we study the marine worm Platynereis dumerilii to provide the first comprehensive investigation of head chemosensory organ physiology in an annelid. By combining microf

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ARSLAN, NAIME, and DENIZ MERCAN. "The aquatic oligochaete fauna of Lake Çıldır, Ardahan-Kars, Turkey, including an updated checklist of freshwater annelids known to occur in the country." Zoosymposia 17, no. 1 (2020): 53–76. http://dx.doi.org/10.11646/zoosymposia.17.1.8.

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In this paper, we present the results of the first survey for aquatic oligochaetes in Lake Çıldır, northeastern Turkey, during which 22 oligochaete species were recorded from the lake. The results of this survey were integrated into an updated and annotated list of oligochaetes and other aquatic annelids occurring in the country, summarized from historical and recent publications. Currently, the freshwater annelid fauna of Turkey includes 150 species of oligochaetes (1 Crassiclitellata, 21 Enchytraeidae, 1 Propappidae, 1 Haplotaxidae, 4 Lumbriculidae, 56 Naidinae, 64 Tubificinae, 2 Lumbricidae

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Bradshaw, Stuart A., Sean C. M. O'Hara, Eric D. S. Corner, and Geoffrey Eglinton. "Dietary lipid changes during herbivory and coprophagy by the marine invertebrate Nereis diversicolor." Journal of the Marine Biological Association of the United Kingdom 70, no. 4 (1990): 771–87. http://dx.doi.org/10.1017/s0025315400059051.

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Changes in dietary lipids (fatty acids, sterols and fatty alcohols) during herbivory and coprophagy by the annelid worm Hediste (Nereis) diversicolor (O.F. Müller) were modelled in laboratory feeding experiments. The dinoflagellate Scrippsiella trochoidea (Stein) was used as the food in herbivory; faeces from the crustacean Neomysis integer (Leach) after feeding on this same alga, were used as the food in coprophagy.Nereis is extremely efficient in its assimilation of dietary lipids and produces faeces with very low fatty acid:sterol (FAST) ratios in both herbivory and coprophagy. The net decr

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Parapar, Julio, Gudmundur V. Helgason, Igor Jirkov, and Juan Moreira. "Diversity and Taxonomy of Ampharetidae (Polychaeta) from Icelandic Waters." Polish Polar Research 35, no. 2 (2014): 311–40. http://dx.doi.org/10.2478/popore-2014-0019.

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Abstract Based on material collected during the BIOICE project off Iceland, the taxonomy and distribution of seventeen species (11 genera) of polychaetous annelids belonging to the family Ampharetidae (Annelida; Polychaeta) is reviewed. Eleven of these species were previously reported in the area or nearby areas: Amage auricula, Anobothrus gracilis, Glyp-hanostomum pallescens, Grubianella klugei, Lysippe fragilis, L. labiata, L. sexcirrata, L. vanelli, Samythella elongata, Sosane bathyalis and S. wireni. Five species, Amage benhami, Melinnampharete eoa, Noanelia hartmanae, Ymerana pteropoda an

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Espíndola-Gonzalez, A., R. Fuentes-Ramirez, A. L. Martínez-Hernández, V. M. Castaño, and C. Velasco-Santos. "Structural Characterization of Silica Particles Extracted from GrassStenotaphrum secundatum: Biotransformation via Annelids." Advances in Materials Science and Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/956945.

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This study shows the structural characterization of silica particles extracted fromStenotaphrum secundatum(St. Augustine) grass using an annelid-based biotransformation process. This bioprocess starts when St. Augustine grass is turned into humus by vermicompost, and then goes through calcination and acid treatment to obtain silica particles. To determine the effect of the bioprocess, silica particles without biotransformation were extracted directly from the sample of grass. The characterization of the silica particles was performed using Infrared (FTIR) and Raman spectroscopy, Transmission E

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ROUSE, GREG W., and KRISTIAN FAUCHALD. "The articulation of annelids." Zoologica Scripta 24, no. 4 (1995): 269–301. http://dx.doi.org/10.1111/j.1463-6409.1995.tb00476.x.

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Parry, Luke, Alastair Tanner, and Jakob Vinther. "The origin of annelids." Palaeontology 57, no. 6 (2014): 1091–103. http://dx.doi.org/10.1111/pala.12129.

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Salazar-Vallejo, Sergio Ignacio. "Biodiversity and Marine Annelids:." Biología y Sociedad 6, no. 12 (2023): 14–32. http://dx.doi.org/10.29105/bys6.12-87.

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En esta contribución atiendo algunas cuestiones relativas al estudio de la biodiversidad y de los anélidos marinos(principalmente poliquetos) desde una perspectiva de las transiciones históricas y ambientales. Se revisa brevemente el origen del término biodiversidad y su rápido desplazamiento en el discurso político por el de desarrollo sostenible, aunque este último ha sido difícil de especificar o alcanzar. La importancia de los anélidos marinos se concibe desde las crisis ambientales contemporáneas, que han sido más severas en el medio marino. Se analiza la historia de la exploración oceano

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Pickerill, Ron K. "Repository of Trentonia shegiriana Pickerill and Forbes, 1978 (Annelida, Polychaeta)." Journal of Paleontology 64, no. 6 (1990): 1041. http://dx.doi.org/10.1017/s0022336000019867.

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The holotype of the errant polychaete annelid Trentonia shegiriana Pickerill and Forbes, 1978 from the Middle Ordovician Trenton Group of the Quebec City area, Quebec, Canada (see Pickerill and Forbes, 1978, fig. 1, p. 660), and subsequently figured in Boardman et al. (1987, fig. 12.4, p. 199), has now been reposited in the Division of Natural Sciences, New Brunswick Museum, Saint John, New Brunswick, with the catalog number NBMG 6501. Although the Trenton Group in this area has yielded additional annelids of uncertain affinity (Conway Morris et al., 1982), the holotype of T. shegiriana still

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Seaver, Elaine C. "Annelids shed light on the evolution of spiralian development." Canadian Journal of Zoology 95, no. 10 (2017): 705–12. http://dx.doi.org/10.1139/cjz-2016-0261.

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Spiralian development is characterized by stereotypic cell geometry and spindle orientation in early cleavage stage embryos, as well as conservation of ultimate fates of descendent clones. Diverse taxa such as molluscs, annelids, flatworms, and nemerteans exhibit spiralian development, but it is a mystery how such a conserved developmental program gives rise to such diverse body plans. This review highlights examples of variation during early development among spiralians, emphasizing recent experimental studies in the annelid Capitella teleta Blake, Grassle and Eckelbarger, 2009. Intracellular

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